Diesel exhaust particulates contain mutagens which are direct‐acting in the Ames test. A dichloromethane extract of these particulates was separated by liquid chromatography and analyzed by high resolution gas chromatography/high resolution mass spectrometry (HRGC/HRMS). 2‐Nitrofluorene, a known carcinogen and direct mutagen, was positively identified by comaxima of ion fragments and retention time on the gas chromatograph.
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Xu et al. (1981) studied this question.
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